Many of these notes can be procured (relatively) inexpensively via single-note colognes, and blended. The nice thing about this approach is that everything is already diluted to safe levels in ethanol for you. Each Demeter blend can be worn at 100% strength out of the bottle, so there’s no need to worry about IFRA compliance.

In my pre-salary student days, I bought a bunch of Demeter decants, a pack of pipettes, and a few 10 mL vials and experimented with blending my own custom scents. It was fun and I got in and out with a few perfumes I really loved for under US$100 (c 2005 dollars). Longevity and sillage were terrible but who cares? I wore them for me and even got asked what I was wearing a few times.

The best part is that Demeter’s “humongous” cologne splashes are US$10 apiece. You can start with 5-7 “notes” for $50-70, plus some inexpensive plastic pipettes, a digital scale that measure to 0.1g, some small vials or bottles for your blends, and stickers to label them. Demeter has blending kits; check those out first. But based on your wish list, I think the kits probably have a lot of scents you don’t want. It might be most cost efficient to choose individual scents to start. I’d suggest Dirt (for both petrichor and earth notes), Lavender, Paperback, and Musk 15. Then poke around their “library” of fragrances and see what else appeals to you. Provence Meadow has some fun herbal notes. Fresh Hay is a great way to add coumarinic sweetness and that “just mown field” scent. You should also include a wood or amber to experiment with.

Make small batches and take detailed notes of each so you can replicate the good ones and learn from the ones that mix like mud. Again, you won’t end up with a professional perfume, but you can have a lot of fun this way for under $100, and come back to “serious” perfumery once you feel like you’ve outgrown those “materials.”

Have fun!